... (VxA) a, aA, aA, \ a aA az / y az -ax\y xaA, a2 A -\xay avax , aA, aA) a aA, aA\ ax I az\ ax ay / A a2 A, a2 Ax \ayaz azay) \azax ax(z ( where again the order of differentiation does not matter PROBLEMS ... +,( af ayaz azay 2f) a/ + i(.I2- azax axaz af).0 axay ayax) (28) Each bracketed term in (28) is zero because the order of differentiation does not matter (b) The Divergence of the Curl of a Vector ... (a) (b) (c) (d) (e) (f) A+ EB, B C, A C A- B, BC, AC AxB, BxC, AxC (A x B) - C, A - (B x C) [Are they equal?] Ax (B x C), B (A C)- C (A - B) [Are they equal?] What is the angle between A and C and...